Low water stannous fluoride plus zinc citrate dentifrice with improved stability, rheology, and efficacy

Abstract

A dentifrice composition having a low water phase comprising effective amounts of polyphosphate and ionic active ingredients.

We claim: 
     
       1. A dentifrice composition comprising:
 a coloring agent; 
 a crosslinked polyvinyl pyrrolidone; 
 at least one humectant; and 
 an orally acceptable vehicle, wherein the vehicle comprises a thickening agent comprising, in combination, a cross-linked polyvinylpyrrolidone present in an amount of about 0.75 to 1.25 wt % of the composition and xanthan gum present in an amount from about 0.2 to 0.3 wt % of the composition; 
 wherein the composition comprises water; and 
 wherein the dentifrice composition has a total water content of less than about 10% based on the weight of the composition. 
 
     
     
       2. The dentifrice composition of  claim 1 , wherein the coloring agent is FD&C Blue#1. 
     
     
       3. The dentifrice composition of  claim 1 , wherein the total water content is of less than about 6% based on the weight of the composition. 
     
     
       4. The dentifrice composition of  claim 1 , wherein the humectant is selected from the group consisting of glycerin, glycerol, polyethylene glycol, sorbitol propylene glycol. 
     
     
       5. The dentifrice composition of  claim 1 , wherein the humectant is glycerol. 
     
     
       6. The dentifrice composition of  claim 2 , wherein the coloring agent is in amount from 0.01% to 5% by weight, based on the weight of the composition. 
     
     
       7. The dentifrice composition of  claim 1 , further comprising additional agents selected from fluoride salts, one or more of an abrasive, a surfactant, an enzyme, a thickener, an antimicrobial agent, a flavoring agent, and a combination of two or more thereof. 
     
     
       8. The dentifrice composition of  claim 1 , wherein the composition is a toothpaste, a paste, a gel, and may be in form of a deep striped, a surface striped, a multilayered, having the gel surrounding the paste, or any combination thereof.